Rotatable Light Source Holder for Backlight Assembly Repair
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Solution Overview
Problem
The existing backlight assemblies for LCD displays, particularly in ultrathin designs, have a cumbersome and wasteful process for replacing broken LEDs, as the entire assembly must be disassembled to replace a faulty LED bar, leading to unnecessary waste and time consumption.
Innovation Solution
A rotatable light source holder with angularly spaced mounting grooves and a manipulating knob allows for manual rotation of light sources within the backlight assembly, enabling the replacement of faulty LEDs without disassembling the unit, utilizing an interference fit and flexible radial protrusions for secure and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple fixing structure with double sided adhesive tape is used for the LED bar, then the device complexity is reduced, but the ease of repair deteriorates because the entire assembly must be disassembled to replace a broken LED
Solution Approach 1:
The LED bar is segmented into multiple independently replaceable LED units, each with its own mounting groove. This allows individual LED replacement without removing the entire LED bar assembly, resolving the contradiction between simple fixing structure and ease of repair.
Solution Approach 2:
The LED holder is designed with rotational capability around a central axis, transforming a static fixing structure into a dynamic one. This enables the LED bar to be rotated and adjusted, facilitating easy replacement of broken LEDs while maintaining structural simplicity.
2Ease of manufacture
If the LED bar is simply fixed to the back plate, then the ease of manufacture is improved, but the loss of time increases during repair as disassembly and reassembly is required
Solution Approach 1:
Multiple LED mounting grooves are pre-formed in the LED holder during manufacturing. This preliminary preparation allows for rapid replacement of broken LEDs by simply rotating the holder to the correct position, eliminating the need for time-consuming disassembly and reassembly operations.
3Ease of repair
If a rotatable light source holder with multiple mounting grooves is implemented, then the ease of repair is improved, but the device complexity increases
Solution Approach 1:
The LED holder serves multiple functions: it mounts multiple LEDs, enables rotational adjustment, and provides a unified fixing interface to the back plate. This multi-functionality achieves easy repair without significantly increasing overall device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the replacement of faulty light sources within the backlight assembly without disassembly, reducing waste and maintenance time, while enabling the adjustment of optical properties for different display modes.
Implementation Method 1
the light source holder is mounted to the backlight housing in such a way that the light source holder is rotatable about a central axis thereof
Implementation Method 2
a LED (Light-Emitting Diode) is used as the backlight source
Implementation Method 3
lights emitted from the backlight source will directly pass through the liquid crystal panel
Implementation Method 4
an incident light from the side will be transmitted through the liquid crystal panel and exit outside after being diverted through a light guide plate
Data Source
AI summary
Embodiments of the present invention disclose a backlight assembly including a backlight housing, a light source holder and a plurality of light sources. The light source holder is mounted to the backlight housing in such a way that the light source holder is rotatable about a central axis X thereof. The light source holder is further provided with at least two light source mounting grooves arranged at an angular interval around the central axis, and each light source mounting groove is configured to mount at least one of the plurality of light sources therein. With this backlight assembly, it is possible to realize replacement of the backlight source without disassembling the backlight assembly by rotating another or other light source to an operating position by rotation of the light source holder.